This is a few years old, but I only found it today:
https://zookeys.pensoft.net/articles.php?id=4667
May be of interest to those without access to engineering equipment.
MichaelG.
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Edit: The link mentioned here [under resources] allows you to request the 73 page build instructions as a PDF, courtesy of the Natural History Museum.
For a complete parts list and assembly manual for all IMp models see the supplementary information (https://doi.org/10.5519/0036449).
A manipulator made from Lego parts
A manipulator made from Lego parts
Too many 'projects'